The Apollo Expansion PEX 1 in. Poly Alloy PEX-A Expansion Barb x 1 in. MNPT Male Adapter (5-Pack) is simple to install. Apollo Expansion PEX poly alloy fittings are the perfect alternative to brass in regions where water quality can negative affect brass. Apollo PEX barb fittings are a key component of the most economical potable water piping systems. Also capable of integration into hydronic heating systems, Apollo Expansion PEX couplings must be secured into place using a Apollo Expansion PEX sleeve or comparable cold expansion-type sleeve or ring (all sold separately). The Apollo Expansion PEX system is a comprehensive cold expansion piping system comprised of brass fittings, poly alloy fittings, manifolds, valves, fasteners, tools and tubing designed for implementation in water delivery systems, simple or complex.. Application: Potable Water. Color Family: Black. Color/Finish: Black. Compatible Pipe Material: PEX. Connection 1: Barb. Connection 2: MNPT. Connectivity: Barb. Features: Corrosion Resistant,Lead Free,Removable. Fitting or Connector Type: Adapter. Fitting/ Connector Collection: PEX. Material: Polyalloy. Maximum Working Temperature (F): 200. Maximum working pressure (psi): 200. PEX Fitting Type: Expansion. PEX Type: A. Pack Size: 5. Pipe or Fitting Product Type: Fittings & Connectors. Product Weight (lb.): .06 lb. Reducing Fitting: No. Returnable: 90-Day. Double Fitting Size: 1" x 1". Fitting 1 size: 1". Fitting 2 size: 1". Fitting Size Dimensions: 1" x 1". Product Length (in.): 1.6 in. Single Fitting Size: 1". Fitting 1 size: 1". Fitting or Connector Type: Adapter. PEX Fitting Type: Expansion. PEX Type: A. Pack Size: 5. Connectivity: Barb. Material: Polyalloy. Application: Potable Water